[VoiceOps] full to compact header conversion

Jon Radel jradel at vantage.com
Thu Nov 5 14:22:32 EST 2009

Quite.  I've been involved in irritating 3-way conversations with "we do 
UDP only, just fragment over that IPSEC tunnel we require that decreases 
the MTU a bit" VZB and "Oh, no we'd never fragment in response to ICMP 
and if you lower the MTU, it'll just change the point at which we  
switch over to TCP" Acme.  I have yet to find an elegant solution that 
fixes the problem for real, though various size reduction exercises 
pretty much make the problem go away for any sane call flow.

--Jon Radel

David Hiers wrote:
> That's the book answer (18.1.1), but some carriers are UDP only.

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